Say name and extension before connect

Dear All,
How can i config and sucess
when sip extension 1001(Mary) call sip extension 1002 (Terry)
can heard Terry extension 1002 before Terry pick up phone ?
This is make sure 1001 Mary is dial the correct extension and find right person .

I know that if you've enabled "#" to dial the Directory, that will announce their recording prior to connecting them. Unsure if you can have it announce it before putting you through to an answering extension though?